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Iron Slag Olivine

Modification of the olivine slag by addition of alumina should make another improvement of the slag properties, allowing for the use of quartz, lime and clay as three fluxes. ... Iron oxides react with this slag forming converting slag of a system FeO Fe 2 O 3 CaO SiO 2 Al 2 O 3 Cu 2 O.

To determine the iron recovery, a novel triangular material balance diagram, which represents the balance among the reduced iron ingot, the reduced iron droplets dispersed in the slag phase, and the residual (unreduced) iron, was proposed.

Olivine’s physical characteristics makes it ideal for use in many high temperature applications such as refractory bricks. Olivine fine products are available in varying mesh sizes. Common applications for olivine fines are slag conditioning, tundish lining, abrasives, and refractory products.

Ancient iron production refers to iron working in times from prehistory to the early Middle Ages where knowledge of production processes is derived from archaeological investigation. Slag, the byproduct of ironworking processes such as smelting or …

A process for the reduction of iron oxides to produce molten iron in which olivine is introduced into a blast furnace in addition to iron oxide bearing materials and in which there is a high content of alkali metal oxides in the materials charged into the furnace, resulting in minimizing or preventing "scaffolding" and improving the operation of the …

The crystals are large, suggesting the slag cooled slowly, and the lobe margin is not marked by the development of much iron oxide, so this example probably cooled right in the mouth of the furnace. As well as producing these images, the analytical SEM also permits chemical microanalyses from tiny spots or areas of the sample.

Lumps of iron slag from smelting processes can also have some similarities to meteorites, so it is important to be careful. The major difference between iron produced by human activity and meteoritic iron is the presence of the element nickel.

Olivine: Olivine, any member of a group of common magnesium, iron silicate minerals. Olivines are an important rockforming mineral group. Magnesiumrich olivines are abundant in lowsilica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earth’s upper mantle.

Brown olivine gems, rich in iron, can be very beautiful, especially when the color runs more golden than brown. Although very rarely found in nature, fayalite commonly occurs in iron slag produced by metallurgical processing.

Fayalite (Fe 2 SiO 4; commonly abbreviated to Fa), also called iron chrysolite, is the ironrich endmember of the olivine solidsolution series. In common with all minerals in the olivine group , fayalite crystallizes in the orthorhombic system ( space group Pbnm ) with cell parameters a …

A process for the reduction of iron oxides to produce molten iron in which olivine is introduced into a blast furnace in addition to iron oxide bearing materials and in which there is high content of alkali metal oxides in the materials charged into the furnace, resulting in minimizing or preventing "scaffolding" and improving the operation of the blast furnace.

Slag Conditioner 90% of the world’s olivine is consumed as a slag conditioner. Olivine is available in various grades for use as a slag former in the blast furnace or as an additive to sinter and pellets.

coal slag Coal slag is byproduct of coalburning power plants, considered a “green” abrasive because it would otherwise be disposed of as waste. It is a relatively cheap, low dusting abrasive with low free silica, but is considered a dirty abrasive and not widely used in wet abrasive blasting because the high amount of “fines” (fine ...

introduction. Iron ore pellets are used for the production of hot metal in blast furnaces and DRI/HBI in direct reduction processes. A blast furnace is a shaft furnace, which is charged with iron bearing materials (pellets, sinters and/or lump ore), reducing agents (metallurgical coke) and additives (limestone, quartz, BOF slag).

Olivine is a magnesiumironsilicate with the formula (Mg, Fe)2SiO4. Olivine is actually a name for a series between two end members, ironrich fayalite and magnesiumrich forsterite. Olivine is often used in metallurgical processes as a slag conditioner, and as a refractory material to make refractory bricks.

Highmagnesium olivine (forsterite) is added to blast furnaces to remove impurities from steel and to form a slag. Olivine has also been used as a refractory material. It is used to make refractory brick and used as a casting sand.

Olivine Turkey. Olivine is the name of a group of rockforming magnesium iron silicate that are typically found in mafic and ultramafic igneous rocks (such as basalt, gabbro, dunite, diabase, and peridotite) and marbles.

Olivine: Olivine, any member of a group of common magnesium, iron silicate minerals. Olivines are an important rockforming mineral group. Magnesiumrich olivines are abundant in lowsilica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of …

SLAG PHASE EQUILIBRIA AND VISCOSITIES IN FERRONICKEL SMELTING SLAGS E. Jak and Hayes ... solid solutions in the olivine (Mg,Fe)2SiO4 primary phase field on subliquidus equilibria, and the ... smelting concentration of Fe3+ in the slag is low, all iron can be assumed to be in the form of Fe2+.

The iron sulphide component of the ore or concentrate is oxidized to iron oxide at ... Copper slag is +2a form of olivine, a magnesium, iron and silicate mineral with the formula (Mg , Fe+2) 2 SiO 4. The production of nano silica from the dissolution of olivine is an economic option when

In Kentucky, most of the brownred, ironlike specimens that are brought to the state’s Universities for identification are manmade iron slag, rather than meteorites. Shiny, silvermetallic specimens brought in for verification as meteorites tend to be manmade metallic silica, which is a slag …

Fayalite is named for the Island of Fayal of the Azores. It is one of two minerals that are simply known as olivine. The other mineral is forsterite. Fayalite is the iron rich member with a pure formula of Fe 2 SiO 4. Forsterite is the magnesium rich member with a pure formula of Mg 2 SiO 4. The two minerals form a series where the iron and magnesium …

Backscattered electron image of a tapped Roman iron smelting slag. The field of view is The backscattered electron images reveal compositional contrasts through their grey scale. In this image the dominant phase, appearing pale grey, is fayalite (an olivine mineral, approximately Fe2SiO4).

The present study reports the properties and hydration of blended cements with ferronickel slag, produced during the pyrometallurgical treatment of laterites for the production of ferronickel. For that purpose, the slag was ground to a specific surface area of 4,000 cm 2 /g and added in ratios 5 ...

Offprint from Proceedings ISA 2006, Eds. JF Moreau, R Auger, J Chabot and A Herzog, Quebec 2009 ISBN 978 2 920576 98 8 SLAGS OF EARLY IRON PRODUCTION IN THE IBERIAN PENINSULA M. Renzi S. Rovira 1. Introduction This paper is an introductory study of some slags related to the siderurgy of the Early ...

Olivine can be used as slag conditioner both in production of sinter and pellet by way of mixing into iron ore and by way of adding as direct billet to high blast furnace. The addition of olivine may be made along with the charge and …

Highmagnesium olivine (forsterite) is added to blast furnaces to remove impurities from steel and to form a slag. Olivine has also been used as a refractory material. It is used to make refractory brick and used as a casting sand. ... These specimens are of the mineral forsterite because the ironrich fayalite is usually a brownish, less ...

Depending on the efficiency of the furnace, the iron oxide (FeO/Fe 2 O 3) content of BOF slag can be as high as 38% (refer to Table 1); this is the amount of oxidized iron that cannot be recovered during the conversion of molten iron into steel.